West Virginia Mine Foreman Practice Test

These questions are part of the practice quiz. Start practicing

• What effect do silicone compound vapors have on the combustible gas sensor?
• How long will the SCSR provide oxygen for the wearer in an emergency situation?
• What should be done with loose or dangerous overhanging ribs, brows, or roofs?
• What is the maximum quantity of explosives that may be stored underground in magazines?
• What is the main purpose of using mechanically operated fans in a mine?
• How is the quantity of air in a ventilating current determined?
• What is the first action to take upon discovery of a mine fire?
• Which of the following factors is critical for maintaining good mine track?
• What is the minimum charge of permissible explosives allowed for a hole that is 6 feet or deeper?
• What indicates a high concentration of methane on the CSE 102 detector?
• What deficiency of oxygen in a methane-air mixture makes an explosion impossible?
• How close to a man-trip may a power trip be operated?
• How is ventilating pressure measured in a mine?
• What population of miners is allowed to work if two emergency exits are not available?
• What method is commonly used to measure static pressure in ventilation systems?
• Who is responsible for monitoring the communication center?
• How should explosives be confined in a drill hole?
• What is the purpose of metallic shielding in an underground high voltage cable?
• What is the minimum quantity of air required at all working faces in a working section?
• What constitutes "fast feed" on roof bolting machines?
• Which personnel are allowed to cross a longwall section face conveyor while it is in operation?
• Which ventilation instrument is essential for recovery work in mines?
• During what period after a fire seal has been erected is there a danger of an explosion?
• What is the required quantity of air passing through the last open crosscut between the intake and return in any pair or set of entries?
• How does elevation affect the reading of a barometer?
• How many kinds of explosives may be used in the same drill hole?
• What is the principal gas contained in coal?
• What is the object of sealing a mine fire?
• When must the operator apply for an extension of the approval to open a mine?
• What essential device must all battery powered equipment be equipped with?
• How should dangerous roof conditions be dealt with?
• How frequently should the mine foreman or his assistant examine each working face?
• How is a working place defined in a coal mine?
• What is required relative to second openings in a mine?
• What is a benefit of decreased mine resistance when increased air circulation is not necessary?
• What is the maximum spacing allowed for roof bolts under normal conditions?
• How can mine explosions be effectively prevented?
• What is a mandatory requirement for all mobile equipment before it is placed into service?
• What is the minimum roof clearance requirement when miners are riding on belts?
• What is the minimum distance from a roadway or power wire that underground powder magazines may be placed?
• Who is responsible for reviewing each approved roof control plan at least every 6 months?
• What approval is required when hoisting more than a specific number of persons at a time?
• What is the harmful gas typically found in afterdamp?
• What term describes the speed of a ventilating current?
• Under what condition can apprentice miners set temporary supports on a working section?
• Under what circumstances may methane accumulate in the presence of fire without the danger of an explosion?
• What type of housing must the main fan be enclosed in?
• What record is required for oxygen and gas tanks in the mines?
• What civil penalty is imposed on a miner who knowingly violates health or safety rules?
• What type of protection should be provided for persons along haulage-ways?
• What is the purpose of shelter holes in mines?
• What is the main purpose of first-aid equipment in a coal mine?
• What is a recommended measure to prevent explosive gases from reaching barricades?
• What is a water gauge?
• How should supplies be positioned along a haulage road?
• Where should trolley hangers be installed in relation to trolley wire splices?
• What condition necessitates the immediate use of the SCSR?
• When using electrically illuminated surface magazines, what type of lights should be utilized?
• How far from pillar workings must trolley and feeder wires and transformers be located?
• What is the significance of keeping mobile equipment at least 15 feet away from checks and doors?
• Why is monitoring ventilating pressure important in mining operations?
• How frequently should safety examinations be conducted in face areas with active equipment?
• How frequently must the map of the coal mine be updated?
• What is the minimum dead weight supported by an approved ATTS system?
• In terms of safety violations, what constitutes a "knowing" violation in coal mining regulations?
• Which unsafe act will lead to the decertification of a certified electrician?
• What is the specific gravity of Hydrogen compared to other gases?
• What period of time is usually taken for measuring air velocities with an anemometer?
• What is the primary focus of a mine operator's roof control plan?
• Where should trolley wire be located in relation to the rail?
• What is the maximum number of persons that can be hoisted at once without special approval?
• What is the minimum distance permitted between slope and drift openings?
• Which method is acceptable for installing high-voltage mine power cables along haulage ways?
• What is the maximum distance that two-way communication facilities should be located from the mine portal?
• What is the maximum distance that temporary supports can be placed apart in unsupported crosscuts?
• What clearance must be provided where supplies are loaded or unloaded?
• How often should electric equipment be tested?
• What effect does barometric pressure have upon a sealed fire area?
• What records must be maintained for electrical equipment examinations?
• What is the proper depth for test holes when using roof bolts?
• What effect does the presence of methane have on coal dust explosibility?
• In the event of a mine fire, how should the fire be approached?
• What are sight lines used for in mining operations?
• In what scenario is hydrogen particularly dangerous?
• What must the minimum oxygen content of the air delivered to working places be?
• When should shelter holes be utilized?
• What should a mine foreman do upon discovering a location that poses a danger?
• What effect do constricted airways have on velocity when the volume of air remains constant?
• What must occur before a miner engages in activities involving roof securing during a shift?
• What permit is required when removing coal near an oil or gas well?
• How can the tension of a roof bolt be approximated?
• Which of the following statements best defines Carbon Monoxide (CO)?
• What instrument measures watts in electrical systems?
• What is a barometer used for?
• When are Ground Fault Circuit Interrupters (G.F.C.I) required?
• How must the circuit be tested if using millisecond delay detonators?
• Which side should cars not be coupled?
• Who should be notified before sealed areas are reopened?
• What does SCSR stand for in the context of mine safety?
• What is the maximum speed for belts transporting miners with an 18" minimum overhead clearance?
• How should travelways be maintained alongside conveyor belt lines?
• What might sudden changes in atmospheric pressure cause in a gas monitor?
• Who is responsible for developing a recovery plan for chocks and/or shields?
• What happens to the velocity of air when the area of the airway is reduced?
• What is the primary role of a cap piece in timber?
• Under which temperature condition is it inadvisable to explore beyond fresh air?
• How often should approved roof control plans be reviewed?
• Where must all main fans in a mine be installed?
• What is the greatest danger associated with pillaring operations?
• What is the maximum distance allowed between shelter holes?
• What is the minimum distance required between shaft and slope openings?
• How often should electrical equipment be examined?
• What changes occur to the atmosphere sealed within a fire area?
• What is the life-line signal for "retreat" during mine emergencies?
• How much air should be delivered to the last open crosscut when places are driven up to 200ft without a connection for air flow?
• What part of moving cars should individuals avoid getting on or off?
• What is a potential health risk of carbon monoxide exposure in mining?
• How long will a mine rescue apparatus provide oxygen for the wearer?
• How should explosives and firing devices be stored with respect to each other underground?
• How is the electrical-zero test performed on the CSE 102 detector?
• What kind of tool should be used for stemming?
• What type of switch throws is considered the safest?
• What provision must individual conductors of an underground high voltage cable have?
• How should unsupported cross-cuts on extended length cuts be supported prior to inby travel?
• What is a recommended response if unusual sounds are detected in the mine?
• What type of practices should be avoided to minimize haulage accidents?
• How often shall entrances to old works be traveled and examined?
• Who is allowed to be inby the equipment being moved in the same ventilating split?
• What is the maximum distance the emergency shelter/chamber can be located from the face?
• What does the presence of carbon monoxide in a sealed fire area indicate?
• What type of shot is prohibited in any mine?
• How is "work area" defined for an apprentice electrician under direct supervision?
• What safety measure is critical due to the properties of hydrogen sulfide in mining?
• When might a mine require a higher quantity of air than usual?
• What is the consequence of failing to notify the Director of MHST after an incident?
• Which regulatory body must be involved before reopening sealed areas in a mine?
• What is a bump in mining terminology?
• When should all employees be evacuated from the mine after the fan stops?
• What does track gauge refer to?
• How much greater is hemoglobin's affinity for carbon monoxide compared to oxygen?
• Where should cars, locomotives, or other equipment be placed on sidetracks?
• What must be done before performing work within the cargo space of a crusher or feeder?
• What must be done before performing work on high voltage circuits?
• What are sheathed type explosives?
• How frequently should high voltage mine power cables be inspected?
• What is the signal for "distress" on a life-line?
• How are the air velocities determined by an anemometer?
• What is an essential requirement for maintaining mine ventilation?
• What class of permissible explosives releases the smallest volume of poisonous gases?
• What is required for a valid SCSR cache storage setup?
• Before sealed areas are opened, who must be notified?
• In what units is the water gauge graduated?
• Before entering a mine after an explosion, what examination should be prioritized?
• Who holds the primary responsibility for preventing injuries and deaths related to unsupported roof work?
• At what voltage must trailing cables without cable reels have grounded metallic shields?
• What effect do obstructions in airways have on the quantity of circulated air, assuming fan speed is constant?
• What effect does moisture have on the strength of the roof?
• What are the primary requirements for good mine track?
• How can the risk of roof falls in pillaring operations be mitigated?
• What distance should telephone wires be maintained from other power wires?
• What must be done to ensure the safety of miners near a fire?
• What must a person possess before being employed at a coal mine?
• Which term describes the decrease in air circulation due to obstacles?
• What should be provided where miners are required to cross moving belts?
• How long should the CSE 102 be allowed to cool between gas tests?
• What type of permit is required for blasting with regular or short interval detonators?
• What is the maximum distance temporary support is set from the location permanent support is being installed?
• What is the required distance for powder magazines to be located from mine openings?
• What protection from moving trips should be provided on both sides of permanent doors?
• What is the method for ventilating pillar lines?
• What additional items are required in storage caches located 500 feet from the working face?
• What is the alarm level activation setting for carbon monoxide on the LTX 310 detector?
• What is the safest and most effective means of controlling a serious mine fire?
• Which of the following factors does NOT affect mine resistance?
• What is the maximum charge of permissible explosives permitted for a hole that is 6 feet or deeper?
• How long should a person wait after a misfire before returning to the area?
• What does "immediate supervision" mean for an apprentice electrician?
• What is the minimum height requirement for surface transformers to avoid shock hazards?
• What should be done if a safety risk cannot be immediately removed from the work area?
• What factors determine the mine resistance?
• What is the explosive range of Hydrogen?
• How does an SCSR function in relation to exhaled carbon dioxide?
• How often should the area around shelter holes be inspected?
• What is a kettle bottom?
• Who approves the mine operator's roof control plan?
• What should be done to determine when to open a sealed fire area?
• How close can a mine operator remove coal from an oil or gas well, after notifying the well operator and MHST?
• How often is a torque check required when installing tensioned roof bolts?
• What is defined as the amount of tightening force applied between the bearing plate and the anchor of a roof bolt?
• How will an oily shake roof and high volatile coal impact conditions for reopening a fire seal?
• All self-propelled track haulage equipment must be equipped with which safety feature?
• What should be provided at locations of sudden changes in overhead clearance along haulage roads?
• What characteristic of a flame indicates the permissibility of an explosive?
• Why is it important to relieve the weight of the roof from pillars during operations?
• What preparatory work is necessary before unsealing a mine fire?
• Which entity is responsible for implementing safety regulations in mines?
• In addition to the pre-shift exam, what is required for all construction and rehabilitation work areas?
• What is the first action to take when a misfire has occurred?
• What is the minimum clearance required on the designated clearance side along each track in sidetracks?
• What is the minimum accepted distance between the remote control miner operator and unsupported roof during extended length cuts?
• What are the principal hazards when sealing mine fires?
• What is the specified width of a flame path for a plane flange joint to be permissible?
• If a locomotive is not coupled to the trip ahead, what distance should be maintained?
• What is necessary to establish the identification of permissible equipment in mines?
• What must be done before removing a misfire when using millisecond delay detonators?
• On belt conveyors transporting materials that do not include miners, stop and start controls are required at intervals not exceeding what distance?
• When should the emergency communication and tracking system be monitored?
• What is a common cause of false readings in gas detectors?
• What are the two systems of ventilation used in mines?
• What is the maximum civil penalty assessed to an operator for violating health or safety rules?
• What is the maximum distance first-aid equipment must be maintained outby the longwall working face?
• How can the ventilation of large abandoned areas be effectively managed?
• When must the Director of MHST and the district mine inspector be notified?
• What is required for each mine concerning roof support?
• What is the maximum distance that straight places may be driven beyond the last open crosscut?
• During pillar extraction, where should non-essential personnel remain?
• Where should miners avoid getting on or off man-trip cars?
• When is it permissible for a trip rider or brakeman to get off of a slow-moving trip?
• How many working days in advance must the operator notify the district inspector prior to the commencement of first pillaring?
• How far outby the last open crosscut must trolley and feeder wires and transformers be located?
• Who should lead the recovery crews after a mine explosion?
• What equipment should all track haulage cars that are regularly connected and disconnected be equipped with?
• Who must be notified before coal is removed within 500ft of an oil or gas well?
• When is an electrical device considered explosion proof?
• What occurs if a sensor on the Solaris multi-gas detector is not properly installed?
• In cases where it is impracticable to remove a danger, what must be done?
• What must the staff monitoring the communication center be knowledgeable about?
• Is it permissible to have a cache located more than 1,000 feet from the face?
• What is the primary purpose of monitoring the communication center?
• What shape of airway is considered most efficient for ventilation?
• Which mine gas can be detected by its distinct odor?
• How many persons should be placed in charge of recovery work after a mine explosion?
• How does an oxygen-enriched atmosphere influence combustible gas readings?
• What visual indicator shows a malfunction in the CSE 102 detector during the battery-voltage test?
• How many apparatus crews are recommended for underground recovery work after an explosion?
• What is the recommended procedure for someone discovering a mine fire?
• When riding belts, at least how far apart must miners be spaced?
• What devices should be provided to prevent a rail car from moving?
• How do constricted airways affect mine resistance?
• What is the minimum distance required between shaft openings?
• What should miners avoid working near to minimize risk?
• How should shelter holes be maintained according to safety standards?
• How often must the mine operator apply for an extension to keep the mine open?
• What is the purpose of the peak reading on a gas detector?
• Why is it important to monitor the oxygen levels during the sealing process?
• What should be done with high voltage cables that are prone to damage?
• What characterizes hydrogen sulfide?
• What is the minimum diameter of a post used for roof support in mining?
• How much air must be delivered to the intake of a pillar line in mining operations?
• Where is it essential to use the SCSR?
• How often should gas test examinations be conducted in face areas where equipment is operating?
• How is ventilating pressure measured by the water gauge?
• What pressure is represented by each inch difference in the level of water columns?
• How can the rubbing surface of an airway be calculated?
• What must be done at the end of trolley and feeder wires?
• What must be provided where miners load or unload from conveyor belts?
• Who is responsible for examining the roadway to be traveled before operating section haulage equipment?
• What is a key characteristic of a proper shelter hole?
• Which regulatory body must be informed prior to coal removal near gas or oil wells?
• What is the principal cause of ignition of explosive mixtures in mines?
• What are the principal causes of mine explosions?
• Who is responsible for inspecting a locomotive before operation?
• What method enhances safety during roof examinations?
• Which gas is primarily increased in concentration when sealing an area affected by mine fire?
• Which agency should be notified immediately following a mine explosion?
• What is a primary duty of motormen and trip riders regarding individuals on locomotives or loaded cars?
• How far must mobile equipment be parked from checks and doors?
• Who must a mine foreman notify in writing regarding non-compliance with mining laws?
• What should be done if a gas detection instrument is subjected to physical shock?
• When should a mine fire be sealed?
• What is the required documentation for an employee before starting work in a coal mine?
• What safety practice is emphasized in cutting or welding activities on longwall face equipment?
• How can equipment operators best protect themselves from falls of the roof?
• What is the first action to take on the surface of a mine after an explosion?
• What is required on haulage roads between the end car of trips placed on sidetracks and moving traffic?
• What records must be provided by the operator within 5 days of a request by the Director of MHST?
• What unit measures the resistance to the flow of electrical current?
• While within a barricade, how should a person behave?
• What is the consequence of a high concentration of afterdamp in mining environments?
• How should clearance points at the end of sidetracks be indicated?
• Who is responsible for supervising the operation of man-trips in a mining setting?
• What is the minimum size required for shelter holes?
• Which conditions of mine air can be determined by measuring devices?
• How must a mine fan installation be protected from an explosion?
• To what percent should oxygen be reduced before attempting to open a fire seal?
• Why should trolley and feeder wires be insulated?
• How must permissible explosives be stemmed to remain compliant?
• Who is responsible for furnishing maps of coal mines?
• What is a primary cause of haulage accidents?
• Which qualifications must a certified shot firer possess?
• Who is allowed to perform electrical work?
• When should telephone wires be carried on insulators?
• Who is required to certify that the map of a coal mine is correct?
• How often should miners check the efficiency of ventilation in tunnels?
• In what type of atmosphere must the zero calibration of a gas detector be made?
• What are the main requirements of good timbers used in mining?
• How does splitting the air affect mine resistance?
• What is the normal pressure of air at sea level?
• What is the required air delivery to the intake of the pillar line if a bleeder return is closed due to roof falls during recovery operations?
• What term describes the sudden explosion of coal and/or rock from pillars or faces?
• Which of the following is not part of the required knowledge for communication center personnel?
• What is the nature of Hydrogen (H2) gas?
• What must be overcome to facilitate the flow of a ventilating current through a mine?
• What causes air to circulate through a mine?
• What item is NOT typically included in the escape kit mentioned?
• What is required for all active underground roadways and working places?
• What is the recommended distance apart that members of a mine rescue team should maintain?
• In the context of mining, what serves as the main reason for airflow management?
• What is the most common source of ignition for mine explosions?
• What impact do short circuits have on the quantity of circulated air, with fan speed remaining constant?
• What voltage range should the battery-voltage test read on the CSE 102 detector?
• What must be provided along haulage roads to ensure the safety of those passing moving cars?
• What is a requirement for operating in a mine without a second exit?
• What is required for all electric equipment taken into or used inby the last open crosscut?
• Which of the following is NOT a requirement for good mine track?
• What is the primary hazard associated with carbon monoxide in mines?
• What is the general principle of the SCSR?
• What is the significance of monitoring atmospheric gases in a mine?
• What effect does the presence of small amounts of methane have on the explosibility of coal dust?
• Who must be present when cutting or welding is performed on longwall face equipment?
• Which of the following conditions allows high voltage mine cables to be exposed?
• What minimum clearance must be maintained on the trolley wire side between the car and the rib, gob, or timber?
• Where must mine foremen be employed according to regulations?
• When spot bolting is performed on track haulage roads, are machines required to have ATRS?
• What is the required experience for obtaining a mine foreman's certificate?
• What three gases are detected by the LTX 310 Electronic Detector?
• What is the main purpose of the SCSR in mining?
• How should telephone lines be installed?
• What is an anemometer?
• What action should be taken to secure overhanging areas in a mine?
• What is essential for ensuring operator safety related to locomotive inspection?
• What is considered the most dangerous type of roof?
• How often shall underground employees be trained in the use of the SCSR?
• How often must the air currents be measured in airways?
• How often should the emergency communication and tracking system be operational?
• What does a gob area refer to in the context of mining ventilation?
• What is the required scale for maps of coal mines?
• What is the purpose of bleeders in mining?
• How can falls of slate and roof be effectively controlled?
• Who is allowed to wear a mine rescue apparatus during operations?
• What record related to man-hoists should be kept?
• What is the effect of continued overload or under voltage on operating motors?
• At what intervals should man doors be installed between intake and return airways for coal heights over 48 inches?
• Where are bleeders typically found in a mining context?
• What does torque refer to in the context of construction?
• What is the principal danger while mine fires are being sealed?
• Can trailing cables be anchored on tensioned roof bolts used for roof support?
• In mining operations, whose responsibility is it to ensure all safety protocols are followed?
• Where does Carbon Monoxide originate?
• What should be totally absent from air samples before unsealing a mine fire?
• Who is required to develop the roof control plan at a mine?
• Can distances greater than 500 feet from the face be exceeded?
• What is the minimum distance fans should be located from the nearest side of the mine opening?
• What is the maximum bearing surface of jacks used for roof support?
• Which regulation applies to the clearance required for moving supplies?
• Cables entering metal frames of motors, splice boxes, and electric compartments must have what?
• What is the effect of incombustible stemming on the flame of an explosion?
• How far from the face must powder boxes or magazines be kept?
• What should be ensured during the calibration of gas detection instruments?
• What is the time frame for donning and activating the SCSR unit?
• What factors can change the reading of a barometer?
• What is the purpose of using temporary seals in fire control?
• When second mining, how many roadways are permissible for the final pushout?
• What is the minimum length of a blasting cable?
• Which of the following statements is true regarding SCSR training?
• What does the term "torque bleed off" mean?
• What knowledge is essential for those monitoring communication systems?
• How long is the period set before rescue teams can investigate seals after they have been erected?
• What type of wood is recommended for making cap pieces?
• When should the Self-Contained Self-Rescuer (SCSR) be used?
• How can the torque of a roof bolt be accurately determined?
• What is one method to remove a misfire?
• What is referred to as afterdamp?
• What is the impact of reduced airway area on the velocity of air when the ventilating pressure remains constant?
• Who is permitted to be inby the operating controls of the roof bolting machine at a working face that is not completely supported?
• What is the purpose of maintaining a ventilating current in pillar lines?
• Why is a circular airway more effective for ventilation?
• Which checks should be performed before using the CSE 102 methane detector?
• When two outlets are not available during work, how many miners may be employed at one time?
• What protective device must be installed on all underground, exposed power conductors that lead underground?
• What does a falling barometer indicate in terms of mine ventilation?
• How soon may a person approach the face after a shot has been fired?
• What is the minimum clearance required along entries between the car and the rib, gob, or timber?
• What is required on all ATRS hydraulic jacks to prevent support failure?
• What is the primary role of a mine foreman?
• What is required for the safe attachment of electrical equipment in mining operations?
• How should switches be kept aligned?
• What barometer reading indicates normal air pressure at sea level?
• How does a raging fire compare to a smoldering fire in terms of oxygen consumption?
• How should surface transformers be installed?
• Which of the following is not a requirement for shelter holes?
• What kind of fire seals should be erected first?
• What requirement must be met regarding the controls of equipment from the same manufacturer and model?
• What is the minimum required distance for power lines over haulage roads?
• How should a post be set in a pitched area?
• What is the maximum allowable width of roadways to avoid exposure to roof fall danger?
• What qualifications should persons on oxygen breathing apparatus crews possess?
• How does an oxygen-deficient atmosphere affect combustible gas readings?
• Which of the following is a requirement for electrical equipment used in mines?
• Which of the following is crucial for mine shallow ventilation?
• In an emergency involving smoke or chemical exposure, what is the first action to taken with an SCSR?
• On which side should miners not ride on man-trips?
• What is the maximum underground development distance before mechanically operated fans are required?
• What is the length of a standard mine rescue life-line?
• What should be done prior to taking an air velocity reading with an anemometer?
• At what distance should warning lights or reflectors be installed along haulage roads?
• What protective measure should be in place at switch throws to guard against moving trips?
• How far from the nearest working face in each section and construction/rehabilitation site should one SCSR cache storage be placed?
• How should mine rescue teams maintain communication with each other and the fresh-air base?